Dropbox - Online Sync and File Sharing
Cryptomator - When it comes to saving your files on a cloud server, it is important to ensure the security of those files. Keeping your delicate files out of the wrong hands can save you a lot of time and hassle. Read more about Cryptomator.
Google Drive - Access and sync your files anywhere
Axcrypt - AxCrypt - Password Protect Files With Strong Encryption. AxCrypt is the leading open source file encryption software for Windows.
Microsoft OneDrive - Secure access, sharing & file storage
Microsoft BitLocker - BitLocker is a full disk encryption feature included with Windows Vista and later.